Java tutorial
import java.awt.event.KeyEvent; import javax.swing.JButton; import javax.swing.JTabbedPane; public class Main { public static void main(String[] argv) throws Exception { JTabbedPane pane = new JTabbedPane(); pane.addTab("Tab Label", new JButton("button")); int index = pane.getTabCount() - 1; int keycode = KeyEvent.VK_L; pane.setMnemonicAt(index, keycode); } }